SIGGI Womens Floppy Straw Sun Hats Summer Beach Accessories Wide Brim Hand-Made 100% straw FREE SIZE: with an adjustable tape built inside the sweatband. Best fit for 55-58cm 21.6"-22.8" 6 7/8 - 7 1/4. WELL VENTILATED: perfect for beach vacation, also great for summer outdoors. DETACHABLE CHIN STRAP: adjustable for a better fit; won't blown off when it gets windy. WIDE BRIM: measures 4"-4.7" in length, is large enough to shade forehead, neck and cheeks from sun lights. When shipped by Comhats,it will be fulfilled within 2 days. Usually it takes 8-10days to be delivered. If you hope to get a PRIME service, please notice to choose "Fulfilled-by-Amazon".